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Finding the Fourth Proportional to 286,368.64, 395,128.64 and 173,169.28

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Solution

The fourth proportional to 286,368.64, 395,128.64 and 173,169.28 is: 238,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,368.64 : 395,128.64 = 173,169.28 : x
  2. Step 2: Convert to fraction form
    286,368.64/395,128.64 = 173,169.28/x
  3. Step 3: Cross multiply
    286,368.64x = 395,128.64 × 173,169.28
  4. Step 4: Simplify right side
    286,368.64x = 68,424,142,096.18
  5. Step 5: Solve for x
    x = 68,424,142,096.18/286,368.64
  6. Step 6: Final answer
    x = 238,937.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.